Weft stop mechanism for looms



(No Model.) 2 Sheets-Sheet 1.

J. MoDADE.

WEFT STOP MECHANISM FOR, LOOMS. No. 365,012.. Patented June 14, 1887.

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(No Model.) 2 sheets sheet 2.

J. McDADE.

WEFT STOP MECHANISM FOR LOOMS. No. 365,012. Patented June 14, 1887.

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JOHN MCDADE, OF BRISTOL, PENNSYLVANIA, ASSIGNOR TO MARY O. CROMPTON, ADMINISTRATRIX OF GEORGE GROMPTON, DECEASED, OF XVOROESTER, MASSACHUSETTS.

WEFT STOP MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 365,012, dated June 14, 1887.

Application tiled January 15, 1986.

To (4% whom it may concern.-

Be it known that I, JoIIN MoDADE, of Bristol, county of Bucks, and State of Pennsylvania, have invented an Improvementin \Veft Stop Mechanisms for Looms, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

In that class of weft stop mechanism wherein the feeler pivoted upon a bracket attached to and moving with the layis raised positively as the lay is going back, in order that the filling may be laid across the warp on the raceway of the lay, the cam or surface for lifting the feeler has been made as asingle piece, the cam commencing to lift the feeler as the lay is about half-way back away from the breastbeam, this being necessary in order to lift the 'feeler in time for the passage of the shuttle, and consequently the feeler has to remain up until the lay is about half-way forward on its way toward the breast-beam.

The invention herein contained has for its object to provide means whereby the fecler may be lowered immediately after the passage of the shuttle across the raceway of the lay, and while the lay is moving toward thebreastbeam, the point atwhich the feeler is lowered being farther away from the breast-beam than the point at which it was raised, the difference in the position of the feeler when it is raised and when it is lowered enablingthe usual dagger, controlled by the feeler, to sooner come into position and to act to stop the loom in the absence of the filling.

This invention consists, essentially, in a dagger-lifter adapted to be carried by the lay, a dagger, and the feeler connected therewith, combined with a support, and with a divided cam to operate the dagger-lifter, whereby the feeler may be lowered quickly on the forward stroke of the lay toward thebreast-beam, substantially as will be described.

The weft stop-motion herein described is intended as an improvement upon that class of weft stopanotions shown in the application of Orompton and XVyman, Serial No. 150,940, it being understood that some of the devices herein described are like those shown in the Serial No.188,6lt8. (No model.)

said application; but I do not herein claim specifically any of the devices shown in said application.

Figure 1 in side elevation shows my improved weft stop-motion devices attached to the breast-beam and lay of a loom, the said breast-beam and lay being in section; Fig. 2, a top view of Fig. 1, and Fig. 3 is a plan view below the irregular section-line x w of Fig. 1.

The stand 6, pivot 7, head 8 of the feelerfork 9, link 10, connecting the said head with the dagger 12, the block 16, having the shoulder 15, the slidebar 18, the plate 24, attached to the breast-beam B by means of bolts 25, the bracket 22, connected therewith by the bolts 23, and having a horizontal shelf, 2l,are all substantially as in the application referred to, and are not herein claimed by me.

The shelf 21 has secured to it, by bolts a, a plate, a, upon which slides the slide-bar 18, provided with a slot, a, which receives in it a block, a, secured to the plate a by a screw,a.

The plate a has adj ustably attached to it, by a bolt, b, a block, I), having pivoted upon it at b a divided cam composed of the-pieces c c. The piece 0 has near its free end a camshapcd projection, c", and at one side of the said projection there is an adjustingscrew, c, the lower end of which bears upon an ear, 0*, of the shelf 21, rotation of the said adjusting-screw enabling the piece 0 to be raised or lowered to place its cam projection 0* higher or lower, to give more or less motion to the fceler--the higher the cam projection the greater the rise of the feeler. The piece 0 also has upon it an overhanging ear, 3, which acts as a stop to prevent the upward movement of the piece a higher than is desired, the said ear serving as a stop for the piece 0.

The piece 0 of the two-part cam has near its free end an inclined surface, 4, which is inline with the cam projection 0 both the surface 4 and the cam projection 0 being in the range of movement of an inclined wedge-like projection, 5, extending from one side of the dagger-lifter d, pivoted at (1 upon an ear of the stand 6, before referred to.

The dagger, at its side next the dagger-lifter, has a pin, 8, which extends horizontally over the said dagger-lifter, and, as the latter is raised-and lowered, correspondingly raises and lowers the dagger in unison with the feeler.

Referring to Fig. 1, it will be supposed that the lay B is being moved backward away from the breast-beam B. As the lay moves farther to the left from the position Fig. 1, the projection 5 at the side of the dagger-lifter meets the cam projection 4 at the side ofthe piece a,

. and the dagger-lifter, raised by the said cam instead of over the cam portion 4 of the part c, the latter at such time being free to rise or turn about its pivot b As soon as the dagger-lifter is lowered, as described, (it being lowered, as will be obvious, at a point distant from the breast-beam farther than the point at which the dagger-lifter was raised as thelay was moved away from the breastbeam,)

- it is free to descend until the feeler rests upon the weft laid across the raceway of the lay, and if the weft is properly laid upon the lay and is unbroken, the weft supports the feeler,

so that the dagger cannot descend far enough to engage the shoulder 15 on the block 16, and consequently the dagger passes the said shoulder and does not move the slide-bar 18 to effect the knocking off of the loom; but in case the weft is absent the dagger drops as soon as does the dagger-lifter, leaving the dagger free to quickly engage the shoulder 15 and start the slide'bar 18 forward, thus enabling the latter to be moved to knock off the loom, or stop the same at a period earlier in v the forward motion of the lay toward the breast-beam than would be possible were the I cam portions 4 and c continuous,or not divided as herein described.

Referring to Fig. 1, where the inclined or cam portion 4, attached to the piece a, is shown by dotted lines,- it will be noticed that the said portion 4 is of oval shape and that it rests normally in an inclined position, the end of the portion 4 toward the breast-beam being close to the upper side of the piece a; but the opposite edge of the portion 4 is elevated above and terminates near the end of the cam projection c, leavinga diagonal or inclined open space between the portion 4 and projection a, over which the projection 5 readily passes as the lay is being moved away from the breast-beam, While in the opposite movement of the lay the said projection always enters the said space and passes under the portion 4, lifting it and the piece 0.

The dagger-lifter adapted to be carried by the lay and provided with a projection, 5, the dagger, and the feeler connected therewith,

' combined with a support and with a divided or two-part cam, c 0', having inclined surfaces 0 and 4, both the said inclined surfaces acting to support the dagger-lifter while the lay is being moved backward, the projection 5 of the dagger-lifter during the forward movement of the lay passing down the inclined surface 0 and under the inclined surface 4 of the divided or two-part cam, the part c of the said cam rising witlrits surface 4, to enable the dagger to be quickly lowered as the lay is being moved forward, as and for the purposes set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

' JOHN MGDADE.

\Vitnesses:

O. S. BAILEY, JoHN ADAMS. 

